(Bloomberg) -- Since OpenAI fired its co-founder and Chief Executive Officer Sam Altman on Friday, a host of players across the tech industry have come onto the scene. From co-founders to chief executives, here are their roles and how they play into the escalating series of events happening at the artificial intelligence firm. The 38-year-old American entrepreneur co-founded OpenAI in 2015 and took the reins as chief executive officer in 2019 before he was suddenly ousted by the board on Nov. 17.